S&P Global Platts assessments are based on robust and transparent market data that includes, but is not limited to, firm bids and offers, expressions of interest to trade and confirmed trades reported across the trading day.
S&P Global Platts also publishes the assessed values as differentials to the CBOT corn futures settles, often referred to as the 'basis', the corresponding futures contract month letter code appears next to the basis value.
– For Argentina, the assessment reflects loading within the next calendar month. The assessments will roll to the following calendar month on the 16th of the current month unless that day is not a business day, in which case the assessment rolls over on the next business day. For example, on July 15 Platts would assess loading over August on July 16 Platts would assess loading over September.
– For Brazil due to the seasonality of the country's export market the daily FOB Brazil assessment has two different approaches according to the time of the year:
From July 16th to December 15th the assessment reflects the next month of loading and rolls to the following calendar month on the 16th of the current month unless that day is not a business day, in which case the assessment rolls over on the next business day. For example, on August 15 Platts will assess cargoes loading over September and on August 16 Platts would assess cargoes loading over October.
From December 16th to July 15th the assessment reflects cargoes due to load only during the upcoming August.